four corners rule

noun

Legal Definition of four corners rule

: a rule holding that if a document (as a contract, deed, or will) appears on its face to be complete no outside evidence may be used to challenge it

Note: The number of states that accept the four corners rule is in decline.

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“Four corners rule.” The Merriam-Webster.com Legal Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/legal/four%20corners%20rule. Accessed 14 December 2019.

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